var arr = [
  { name: '郑00昊', height: 175, weight: 130, sex: 'm', msg: 'superman' },
  { name: '李天成', height: 170, weight: 100, sex: 'm', msg: 'ren' },
  { name: '梁恐爪', height: 178, weight: 120, sex: 'f', msg: 'ren' },
  { name: '攀枝花', height: 170, weight: 160, sex: 'f', msg: 'ren' },
];

var oUl = document.getElementById('wrapper').getElementByClassName('list')
  .children[0];
console.log(oUl);
